Replacement Procedures For Scanner Unit; Scanner Unit - JRC JMR-92 Series Field Service Manual

4.1 Replacement Procedures for

Scanner Unit

Precautions
To turn Off the power, do not keep the Power button depressed long. Otherwise, a trouble may
occur due to termination failure.
Never directly touch the internal components of the Scanner unit or Display unit. Direct contact
with these high-voltage components may cause electric shock. For maintenance, inspection, or
adjustment of equipment components, consult with our branch office, branch shop, sales office,
or our distributor in your district.
Do not get close to the radiator of the Scanner unit. It is a rotating part, and it may cause
injuries if it suddenly starts rotating and consequently hits the body. It is recommended that the
radiator be installed at a high place such as on the roof of the wheelhouse, on the flying bridge,
on the trestle, or on the radar mast so that no one can get close to it.
Microwave radiation level of the Scanner unit:
Keep away from the Scanner unit during transmission.
Microwaves are generated from the front center of the radiant section of the Scanner unit at the
levels indicated in the table below. Exposure to microwaves at close range can result in injury
(especially damage to eyes).
NKE-2103
NKE-1125/1129/2254
NKE-1130/1139
NKE-2632
NKE-1632
Make sure to install the Scanner unit at a place higher than human height.
Direct exposure to electromagnetic wave at close range will have adverse effects on the
human body.
When it is necessary to get close to the Scanner unit for maintenance or inspection purposes,
make sure to turn the power switch of the display unit to "OFF" or "STBY".
Direct exposure to electromagnetic waves at close range will have adverse effects on the
human body.
When conducting maintenance work, make sure to turn Off the power so that the power supply
to the equipment is completely cut off.
Some equipment components can carry electrical current even after the power switch is turned
off, and conducting maintenance work may result in electric shock, equipment failure, or
accidents.
Chapter 4 Replacement procedure
Microwave radiation level of the Scanner unit
System 50 W/m
n/a
5 cm
11 cm
1.38cm
1.45cm
2
20 W/m
26 cm
81 cm
76 cm
3.1cm
3.25cm
4-2
2 2
2.5 W/m
123 cm
162 cm
181cm
209.76cm
128.37cm